Secretary of State John Kerry went on CBS' "Face the Nation" where he pointed out pieces of evidence that Russia did supply weapons to Eastern Ukraine separatists to shoot down Malaysia Airlines Flight 17:

"What we have is a lot of evidence that points in the direction, that raises very, very serious questions, including the fact that a few weeks ago, we have 150-vehicle convoy coming from Russia, going into the east of Ukraine with tanks, artillery, multiple rocket launchers, armored personnel carriers, turned over to the separatists," Kerry said. "We know that there are Russians who are leaders of the separatists. Some, not all. Some. And we know that the Russians have armed the separatists, trained the separatists, support the separatists, and have, to date, not publicly called on the separatists to stand down or to be part of the solution."

Kerry also noted that there was an SA-11 surface-to-air missile in the vicinity of crash right before the plane was shot down, and said that there is documentation on social media that separatists bragged about shooting down the plane. The U.S. has also intercepted recordings of separatists talking to each other about the plane being shot down.

Finally, Kerry said, there is video evidence that a SA-11 system was moved back into Russia and is now missing from Eastern Ukraine. "So there's enormous amount of evidence, even more evidence than I just documented, that points to the involvement of Russia in providing these system, training the people on them," Kerry said.

Kerry called for a full investigation with international investigators and trained personnel that can "draw the appropriate conclusions" and prevent a "he-said-she-said, finger-pointing back-and-forth" about who is responsible.

He slammed the "drunken separatists" who have been accused of removing bodies from the crash scene and limiting investigators from having full access to the site. Russia needs to do more to stop this behavior, Kerry said.

"Because of Russia's linkage to these separatists, they have a greater ability to exert influence, and we need Russia to become part of the solution, not part of the problem," he said.

As for what the U.S. can do if Russia is responsible, Kerry pointed to Obama's announcement of further sanctions on key sectors of the Russian economy that were announced the day before the airliner crash. This should prompt U.S. allies in Europe to do more, he said.

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